Miniature rose plant named ‘KORpot050’

ABSTRACT

A new and distinct variety of rose with long lasting, novel orange-red flowers, and attractive foliage with very good disease resistance. It exhibits compact, upright to bushy growth with abundant flowers. The new variety propagates well from cuttings and by grafting. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

Latin name of genus and species: The botanical classification of the newrose plant is Rosa hybrida.

Variety denomination: The denomination of the new variety is‘KORpot050’.

CROSS REFERENCES AND FEDERAL R&D STATEMENT

There are no cross referenced or related applications. This variety wasdeveloped without the aid of any research grant.

BACKGROUND OF THE INVENTION

The new variety of rose plant of the present invention originated from acontrolled crossing in a breeding program of two distinct parents duringthe summer of 2011. The crossing was between an un-named seedling, theseed parent, and another un-named seedling, the pollen parent by thesame inventor.

The resulting seeds were planted during the following winter. Theresulting seedlings were evaluated and exhibited distinctive physicaland biological characteristics. The new rose plant was selected as asingle plant from the seedling beds due to its superior characteristicsand asexually propagated for further evaluation. This new anddistinctive rose variety is named ‘KORpot050’.

SUMMARY OF THE INVENTION

The new rose plant may be distinguished from its seed parent, anun-named seedling, by the following combination of characteristics:

-   -   1. ‘KORpot050’ has orange-red flowers with high centers, whereas        the un-named seedling has red flowers which are rounded in        shape.    -   2. ‘KORpot050’ has very good shelf-life, whereas the un-named        seedling has average shelf life.

The new rose plant may be distinguished from its pollen parent, anun-named seedling, by the following combination of characteristics:

-   -   1. ‘KORpot050’ has medium-sized orange-red flowers, whereas the        un-named seedling has large red flowers.    -   2. ‘KORpot050’ has a compact growth habit, whereas the un-named        seedling has an upright growth habit.

The objective of the hybridization was to create a new and distinct roseplant with unique qualities, such as:

-   -   1. Compact and uniform growth and flowering under greenhouse        conditions when grown as a potted floral plant;    -   2. Abundant, long lasting, and attractive flowers and foliage;    -   3. Resistance to diseases encountered in greenhouse and nursery        culture; and    -   4. Suitability for production from softwood cuttings in floral        and nursery containers.

This combination of qualities is not present in prior rose cultivarsknown to the inventor. These objectives have been substantially achievedand in that distinguish ‘KORpot050’ from all other varieties of which Iam aware.

As part of a rose development program, Tim-Hermann Kordes germinatedseeds from the aforementioned hybridization and conducted evaluationsand observations on the resulting seedlings in a controlled environmentin Offenseth-Sparrieshoop, Germany. The resulting seedlings exhibiteddistinctive physical and biological characteristics. The new rose plant‘KORpot050’ was selected in April 2012 from the seedling beds to beasexually propagated for further evaluation. The first asexualpropagation of ‘KORpot050’ was done by rooting softwood cuttings in June2012 at the inventor's nursery in Offenseth-Sparrieshoop, Germany.

These initial and other subsequent propagations conducted in controlledenvironments demonstrate that ‘KORpot050’ reproduces true to type insuccessive generations of asexual reproduction.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying color drawing shows as true as is reasonably possibleto obtain in color photographs of this type, the typical characteristicsof the buds, sepals, reproductive organs, flowers, leaves, prickles, andstems of ‘KORpot050’.

DETAILED BOTANICAL DESCRIPTION

The following is a description of ‘KORpot050’, as observed growing inDecember, 2014 in a nursery in Jackson County, Oreg. on plants of 8months of age. Color references are made using The Royal HorticulturalSociety (London, England) Colour Chart, 2001 except where common termsof color are used.

For a comparison, several physical characteristics of the rose variety‘KORpolare’, a rose variety from the same inventor described andillustrated in U.S. Plant Pat. No. 18,840 and issued on May 27, 2008 arecompared to ‘KORpot050’ in Chart 1.

CHART 1 Characteristic ‘KORpot050’ ‘KORpolare’ General tonality on openRed Group Red Group 53A to 53B flower. 43B. with intonations of Red-Purple Group 60A Average petal count under 30. 55. normal conditions.Average size of sepals. 20 to 25 mm (l) × 35-40 mm long × 9 mm 6 to 7 mm(w). wide.

-   Parents:    -   -   Seed parent.—An un-named seedling.        -   Pollen parent.—An un-named seedling.-   Classification:    -   -   Botanical classification.—Rosa hybrida ‘KORpot050’.        -   Commercial classification.—Miniature rose.

FLOWER AND FLOWER BUD

-   Blooming habit: Recurrent.-   Flower bud:    -   -   Size.—Upon opening, 30 mm in length from base of receptacle            to distal end of bud and 15 mm diameter at its widest point.        -   Bud form.—Long. Pointed ovoid. High centered.        -   Bud color.—As sepals first unfold, bud color is Red Group            45C. When ¼ open, the upper surface of petals is Red Group            44B, and the lower surface is Red Group 45C.        -   Sepals.—Color: Upper surface Yellow-Green Group 146B. Lower            surface Yellow-Green Group 146B. Size: Average 20 to 25 mm            (l)×6 to 7 mm (w). Calyx diameter: 50 to 60 mm. Shape: Very            weak foliaceous appendages on one of the five sepals. Apex:            Typically apiculate, occasionally cirrose. Base: Flat at            union with receptacle. Quantity: Five. Surface texture:            Upper side: Hoary. Lower surface: Hispid. Margins: Cilliate.            Stipitate glands: Abundant on lower surface only.-   Flower bloom:    -   -   Fragrance.—Moderate.        -   Duration.—On the plant 15 to 18 days. Senesced petals drop            away cleanly.        -   Size.—Medium-sized for a miniature rose. When open, the            average flower diameter is 50 to 55 mm and the average            flower height is 25 to 35 mm.        -   Form.—Shape: Round. Shape of flower when viewed from the            side: Upon opening, upper part: Flat. Upon opening, lower            part: Flattened convex. Open flower, upper part: Flat. Open            flower, lower part: Flattened convex.-   Color:    -   -   Upon opening, petals.—Outermost petals: Outer Side: Red            Group 45C. Inner Side: Red Group 44B. Innermost petals:            Outer Side: Red Group 50A, with intonations of White Group            155A on the basal zone. Inner Side: Red Group 43B, with            intonations of White Group 155A on the basal zone.        -   Upon opening, basal petal spots.—Basal petal spot, outermost            petals: Outer Side: Red-Purple Group 63B. Inner Side: White            Group 155A. Size: Average 4 to 5 mm (h)×5 to 6 mm (w). Basal            petal spot, innermost petals: Outer Side: White Group 155A.            Inner Side: White Group 155A. Size: Average 1 mm (h)×2 mm            (w).        -   After opening, petals.—Outermost petals: Outer Side: Red            Group 45C, with intonations of White Group 155A occasionally            present on basal zone. Inner Side: Red Group 44B, with            intonations of White Group 155A occasionally present on            midrib. Innermost petals: Outer Side: Red Group 50A, with            intonations of White Group 155A present on midrib. Inner            Side: Red Group 44C, with intonations of White Group 155A            present on midrib.        -   After opening, basal petal spots.—Basal petal spot,            outermost petals: Outer Side: White Group 155A. Inner Side:            White Group 155A. Size: Average 1 to 5 mm (h)×2 to 8 mm (w).            Basal petal spot, innermost petals: Outer Side: White Group            155A. Inner Side: White Group 155A. Size: Average 1 to 5 mm            (h)×2 to 5 mm (w).-   General tonality: On open flower Red Group 43B. No change in the    general tonality at the end of the 8th day. Afterwards, general    tonality is Red Group 43D.-   Petals:    -   -   Petal count.—Double. Approximately 30 petals under normal            conditions.        -   Petal reflex.—Outermost petals reflex slightly. Reflex            occurs one by one.        -   Petal margin.—Typically entire. A few of the innermost petal            margins are emarginate.        -   Petal shape.—Obovate. Apex: Typically apiculate,            occasionally retuse on some innermost petals. Base: Cuneate.        -   Petal size.—19 to 30 mm (l)×7 to 35 mm (w).        -   Petal arrangement.—Formal.        -   Texture.—Inner Side: Leathery. Outer Side: Leathery.-   Petaloids:    -   -   Petaloid count.—Average of 10 per flower.        -   Petaloid size.—7 to 16 mm (l)×3 to 15 mm (w).        -   Petaloid color.—Inner side: Red 44B. Outer side: 45C.            Intonations of White Group 155A present on midrib of both            sides.        -   Petaloid texture.—Inner Side: Smooth. Outer Side: Smooth.        -   Margins.—Undulated.        -   Petaloid shape.—Obovate to Obcordate, with many petaloids            highly irregular. Apex: Emarginate. Base: Attenuate.-   Reproductive organs:    -   -   Pistils.—Approximately 50 present. Stigmas: Location:            Slightly superior in position to anthers. Color:            Yellow-White Group 158A. Styles: Length: About 5 to 10 mm            long. Color: Red Group 45A, with intonations of Yellow-White            Group 158A.        -   Stamens.—Approximately 40 on average and regularly arranged.            Anthers: Size: Average 2 to 3 mm (l)×1 to 2 mm (w). Color:            Yellow-White Group 158A with intonations of Red Group 54A.            Pollen: Generally present. Color: Greyed-Yellow 161B.            Filaments: Color: Yellow Group 4B with intonations of Red            Group 54B. Length: 4 to 6 mm.        -   Receptacle.—Surface: Abundant stipitate glands and small            prickles present. Color: Yellow-Green Group 144A to 144B.            Intonations of Greyed-Purple Group 183C present on stipitate            glands. Shape: Urn-shaped. Texture: Hispid. Size: 5 to 7 mm            (h)×10 to 12 mm (w).        -   Peduncle.—Surface: Abundant stipitate glands and small            prickles present. Length: 45 to 65 mm average length.            Diameter: 2 to 4 mm average diameter. Color: Yellow-Green            Group 146A to 146B, with intonations of Greyed-Purple 183C            present on stipitate glands. Strength: Somewhat strong.            Texture: Hispid. Borne: Singularly. Flowers held upright.

THE PLANT

-   Growth: Moderately vigorous.-   Plant habit: Compact. Upright to bushy. When grown as a 15 cm pot    plant, the average plant height is 30 to 35 cm and the average plant    width is 20 to 25 cm.-   Stems:    -   -   Stem color.—Young wood: Yellow-Green Group 144C. Older wood:            Yellow-Green Group 146A.        -   Stem surface texture.—Young wood: Smooth. Older wood:            Smooth.        -   Length.—20 to 25 mm average length when grown under            commercial greenhouse floral production.        -   Diameter.—3 to 5 mm average diameter.-   Prickles: Present.    -   -   Incidence.—Average of 13 per each 10 cm of stem.        -   Size.—Average length: 3 to 5 mm.        -   Color.—Immature prickles: Yellow-Green Group 145C. Mature            prickles: Yellow-Green Group 145C. Intonations: Greyed-Red            Group 181C and 181D.        -   Shape.—Deeply concave.-   Leaves: Normally 5 leaflets on normal leaves in middle of the stem.    -   -   Venation pattern.—Pyramidal net pattern.        -   Leaf size.—80 to 100 mm (l)×55 to 75 mm (w).        -   Abundance.—Abundant.-   Leaflets:    -   -   Size.—Average size of the terminal leaflet is 35 to 45 mm            (l)×20 to 25 mm (w).        -   Shape.—Elliptic to acuminate. Base: Obtuse. Apex: Acute to            acuminate.        -   Margins.—Serrated.        -   Surface.—Semi-glossy.        -   Texture.—Upper side of leaflet: Smooth. Under side of            leaflet: Leathery.        -   Color, mature foliage.—Upper Leaflet Surface: Green Group            139A. Lower Leaflet Surface: Yellow-Green Group 146B.        -   Color, juvenile foliage.—Upper Leaflet Surface: Yellow-Green            Group 146A. Lower Leaflet Surface: Yellow-Green Group 146B.        -   Anthocyanin intonation.—Greyed-Purple 183C. Location:            Present on leaflet margins.        -   Arrangement.—Odd pinnate.        -   Venation.—Reticulate.-   Stipules:    -   -   Size.—15 to 18 mm (l)×6 to 8 mm (w).        -   Stipule color.—Yellow-Green Group 146A, Yellow-Green Group            146D on midrib.        -   Anthocyanin.—Greyed-Purple 183C present on margins.        -   Stipitate glands.—Abundant numbers present on margins.        -   Margins.—Glandular toothed.        -   Texture.—Glabrous.        -   Shape.—Apex: Apiculate. Base: Winged.-   Petiole:    -   -   Length.—Average 25 mm.        -   Diameter.—Average 1 mm.        -   Petiole color.—Upper surface: Yellow-Green Group 146A.            Underneath: Yellow-Green 146B.        -   Margins.—Glandular toothed, with limited numbers of            stipitate glands.        -   Anthocyanin.—Greyed-Red Group 183C, present on margins and            upper surface.        -   Prickles.—Occasionally one small prickle underneath.        -   Stipitate glands.—Limited numbers present on margins only.        -   Texture.—Upper surface: Papillate and pubescent. Underneath:            Glabrous.-   Petiole rachis:    -   -   Length.—Average 10 to 15 mm.        -   Diameter.—Average 1 mm.        -   Color.—Yellow-Green Group 146A.        -   Anthocyanin.—Greyed-Red Group 183C present on margins and            upper surface.        -   Margins.—Entire with occasional stipiate glands present.        -   Prickles.—A few small prickles underneath.        -   Stipitate glands.—Limited numbers of stipitate glands on            margins.-   Hips/seed formation: None observed.-   Winter hardiness: Due to its primary use in greenhouse culture,    winter hardiness of the variety has not been evaluated.-   Disease resistance: Above average resistance to Powdery mildew    (Sphaerotheca pannosa and Botrytis (Botrytis cinerea) diseases under    normal growing conditions in Jackson County, Oreg.

I claim:
 1. A new and distinct variety of rose plant, as described andillustrated herein.